Appeal No. 1997-2682
Application No. 08/382,937
The claimed invention relates to a light source in which
light emitted from a stimulated luminescent layer is guided
through an optical filter. More particularly, Appellants
indicate at pages 2 and 3 of the specification that the
optical filter is a cholesteric filter having at least one
cholesteric crystal layer.
Claim 1 is illustrative of the invention and reads as
follows:
1. A light source having a luminescent layer, means for
stimulating light emission from the layer in a first
wavelength range, and an optical filter for
filtering the emitted light, characterized in that the
optical filter is a cholesteric filter comprising at least
one cholesteric crystal layer.
The Examiner relies on the following prior art:
Adams et al. (Adams) 3,697,152 Oct. 10,
1972
Welker et al. (Welker) 5,089,883 Feb. 18,
1992
Shanks 5,193,015 Mar. 09,
1993
(Filed Oct. 05, 1990)
Barnik et al. (Barnik) 5,235,443 Aug. 10,
1993
(Filed Feb. 24, 1992)
Claims 1, 2, 6, and 9 stand finally rejected under
35 U.S.C. § 103 as being unpatentable over Welker in view of
Adams, Shanks, and Barnik.
2
Page: Previous 1 2 3 4 5 6 7 8 9 10 Next
Last modified: November 3, 2007